Throughout history philosophers have sought to define, understand, and delineate concepts important to human well-being. One such concept is "knowledge." Many philosophers believed that absolute, certain knowledge, is possible—that the physical world and ideas formulated about it could be given solid foundation unaffected by the varieties of mere opinion.Sextus Empiricus stands as an example of the "skeptic" school of thought whose members believed that knowledge was either unattai...

Kant's Prolegomena, although a small book, is without doubt the most important of his writings, writes the translator, Paul Carus.Prolegomena means, literally, prefatory or introductory remarks, and it furnishes us with a key to his main work, The Critique of Pure Reason; in fact, it is an extract containing all the salient ideas of Kant's system. It approaches the subject in the simplest and most direct way and is therefore best adapted as an introduction into his philosophy. It i...

Enquiry Concerning Political Justice and Its Influence on Morals and Happiness by William Godwin (1756-1836) was first published in February 1793, the month following the execution of Louis XVI of France.It proved to be immediately popular and influential. Godwin, the son of a Calvinist preacher, was educated at Hoxton Academy, after which, he became a minister to a dissenter congregation in Ware. However, partially as a result of reading Rousseau, Helvetius and d’ Holbach, his thi...

The Critique of Practical Reason was published in 1788, seven years after Immanuel Kant's major work, Critique of Pure Reason.In it, Kant sets out his moral philosophy - and it proved a seminal text in the history of the subject. He argues that the summum bonum (the highest good) of life is that rather than just pursuing happiness, people should inhabit a moral dimension that enables them to deserve the happiness that God can give. Though much shorter than Critique of Pure Reason, ...

The front cover of the second edition of Language, Truth and Logic carried this statement in capital letters: ‘THE CLASSIC TEXT WHICH FOUNDED LOGICAL POSITIVISM - AND MODERN BRITISH PHILOSOPHY.’It was a bold statement, but the book, first published in 1936 when A. J. Ayer was just 25 and a lecturer on philosophy at Christ Church, Oxford, drew unstinting praise from leading figures in the field, including Bertrand Russell. Its effect was to ‘sweep away the cobwebs and revitalise Bri...

Henri Bergson (1859-1941) was the leading French philosopher of the first half of the 20th century. Near the end of his life when he was forced to register with the police in Nazi-occupied France he wrote: ‘Academic. Philosopher. Nobel prize winner. Jew.’He was indeed all these things and many more, being as famous in his lifetime for his political activities, working with US President Woodrow Wilson to found the League of Nations, as for being a member of the Académie française an...

Henri Bergson’s highly influential book, ‘Creative Evolution’ (‘Evolution Creatrice’, 1907) established a theory of evolution - called ‘Creative Evolution Theory’ - which gained a considerable following in the first half of the 20th Century. It also helped the author to win the Nobel Prize in 1927 for his work investigating the origins of biological information and divergence in the evolutionary process.In this work, Bergson seeks an alternative explanation as to how new forms of l...

Matter and Memory, (Matière et Mémoire), published in 1896, was the second book written by Henri Bergson (1859-1941), one of the leading French philosophers of his age. It followed Time and Free Will (1889) and helped to establish him as a major force in anti-mechanistic thought, opposing the trend towards uncompromisingly secular and scientific views. However, when Matter and Memory appeared, Bergson was 39 and had yet to become the hugely influential figure he became in the first decades...

Kant’s Critique of Judgement is the third and final part of his series of Critiques, which began with Critique of Pure Reason and continued with Critique of Practical Reason.Critique of Judgement was published in 1790 and is divided into two parts, the Critique of Aesthetic Judgement and the Critique of Teleological Judgement.Our ‘judgements of taste’, as Kant describes our aesthetic judgements, have both a personal and a universal function: personal because we have a subje...

The Gay Science (The Joyful Wisdom) is one of Nietzsche's greatest books. His wonderfully fertile mind roams over mankind, his thoughts, his emotions, his behaviour and his weaknesses with remarkable clarity, with insight - but also with humour!In this work are 383 separate paragraphs, some short, some long, but all singular observations - the epitome of his famous aphoristic style. 'Morality is the herd instinct in the individual.' 'The world is overfull of beautiful things, but i...

‘How selfish soever man may be supposed, there are evidently some principles in his nature, which interest him in the fortune of others, and render their happiness necessary to him, though he derives nothing from it except the pleasure of seeing it.’So begins The Theory of Moral Sentiments (1759), the first major text by Adam Smith, who, seven years later, was to publish what was to become one of the major economic classics, The Wealth of Nations (1776). However, Smith regarded The...

The Wealth of Nations, first published in 1776, is the first book of modern political economy and still provides the foundation for the study of that discipline. An Enquiry into the Nature and Causes of the Wealth of Nations, to give it is full title, was an immediate best seller and has since rightfully claimed its place in the Western intellectual canon. Its author, Adam Smith (1723-1790), was one of the brightest stars of the 18th-century Scottish Enlightenment.Along with import...